Petrarch works
Petrarch's beloved
Petrarchan piece
Petrarchan sonnet finale
Petrarchan sonnet part
Petrarchan unit
Petrarchan works
petrel
Petrel's territory
Petri Director
Petri dish content
Petri dish contents
Petri dish contents, perhaps
Petri dish contents, sometimes
Petri dish filler
Petri dish gel
Petri dish gelatin
Petri dish gels
Petri dish jelly
Petri dish layer
Petri dish material
Petri dish medium
Petri dish mixture
Petri dish stuff
Petri dish substance
Petri-dish gel, perhaps
Petri-dish matter
petrifaction
petrified
Petrified Forest flora
Petrified Forest setting
Petrified Forest site
Petrified Forest's st.
Petrified relic
Petrified remains
Petrified remains of plant or animal
PETRIFIED vegetation
Petrified weeper of myth
Petrified wood, e.g.
petrify
Petrify ... or what five alternating words in 17-, 23-, 29-, 43- and 50-Across can do?
petrifying
Petrifying figure
Petro purchase measure
Petro-Canada alternative
Petro-Canada competitor
Petro-Canada measure
Petro-Canada purchase
Petro-Canada rival
Petro-Canada unit
Petrocelli of Red Sox fame
Petroglyph animal
Petroglyph period
Petrograd pooh-bah
PETROGRAD river
Petrographer's collection
petrol
petrol additive
Petrol amount
Petrol brand
Petrol buy
petrol can
petrol canister
PETROL container
Petrol Measure
Petrol measure
Petrol measures
Petrol pick
Petrol provider
Petrol pump
Petrol pump unit
Petrol pumper
Petrol purchase
Petrol purveyor
PETROL quality rating number
Petrol quantities
Petrol quantity
Petrol rating
Petrol rival of BP
Petrol seller
PETROL station
Petrol station brand
Petrol station choice
Petrol station name
Petrol station sign
Petrol unit
Petrol Unit A/C
Petrol units
Petrol utiliser
PETROL, component of
Petrol, stateside
petroleum
Petroleum by-product
Petroleum cartel
Petroleum center on the Gulf of Mexico
Petroleum company
Petroleum component
Petroleum container
Petroleum derivative
Petroleum dispenser
Petroleum distillate
Petroleum distillate used as fuel
petroleum drilling apparatus
Petroleum drum
PETROLEUM ether, component of
petroleum filled region: 2 wds
Petroleum giant
Petroleum gp.
Petroleum holder
petroleum jelly
Petroleum magnate
Petroleum magnate?
Petroleum measure: Abbr.
Petroleum name
Petroleum nickname
Petroleum or propane
Petroleum org.
Petroleum org. since 1960
Petroleum pathway
Petroleum producers org.
PETROLEUM product
Petroleum product ending
Petroleum refinery byproduct
Petroleum refining byproduct
PETROLEUM residue
Petroleum ship
Petroleum source
Petroleum tankers
Petroleum transporter
Petroleum-based lubricant
Petroleum-carrying ship
Petroleum-carrying vessel
Petroleum-packed peninsula
Petroleum-pricing org.
Petroleum-regulating gp.
Petroleum-rich African desert country
PETROLEUM-yielding product
Petrologist's specimen
petronel
petrosal
Petroselinum crispum
Petrostate's reserves
Petrouchka, for one
petrous
Petrova of tennis
Petruchio in "The Taming of the Shrew"?
Petruchio tamed her
Petruchio tames her
Petruchio, e.g.
Petruchio, to Kate
Petruchio's bride
Petruchio's challenge
Petruchio's Kate, e.g.
Petruchio's love
Petruchio's problem
Petruchio's request of Kate
Petruchio's significant other
Petruchio's town
Petruchio's wife
Pets
Pets ... or what the starts of 17-, 25-, 50- and 61-Across are all kinds of
Pets bookended by "pets"
Pets from the tropics
Pets in viral YouTube videos
Pets kept in terrariums
Pets neckwear
Pets often have them
Pets that commonly have different-colored eyes, such as one blue and one amber
Pets that do housework?
Pets that help with luggage after a trip?
Pets that meow
Pets that purr
Pets with dewlaps
Pets with wrinkly snouts
Pets' docs
Pets' shelter
PetSmart purchase
PetSmart purchase, perhaps
Pettable
Petted
Petted pet's sound
Petted, as cats
Petticoat
petticoat flounce
Petticoat frill
Petticoat junction
Petticoat Junction setting
Petticoat Junction star
Petticoat junction?
PETTICOAT, striped woollen
Pettifog
pettifogger
Pettifogger's points
Pettifogging lawyer
Pettily punishes
pettiness
Petting ___
Petting place
Petting place, perhaps
Petting places
Petting setting
Petting zoo animal
Petting zoo animals
Petting zoo babies
Petting zoo baby
Petting zoo beast
Petting zoo call
Petting zoo chorus
Petting zoo critter
Petting zoo cry
Petting zoo favorite
Petting zoo female
Petting zoo newborns
Petting zoo noises
Petting zoo plaint
Petting zoo prattle
Petting zoo sound
Petting zoo sounds
Petting zoo youngster
Petting zoo youngsters
Petting-zoo sounds
pettish
pettishness
Petty
Petty and Singer
Petty annoyance
Petty annoyances
Petty argument
Petty arguments
Petty around Hollywood
Petty braggart
Petty bureaucrat
Petty cash
Petty cash fund
Petty cash source, once
Petty cash source?
Petty cash supplier?
Petty clash
Petty Clash of clans
Petty complaint
Petty complaints
Petty creature of the Rockies, with 56-Across?
Petty crime, sometimes
Petty criminal
Petty criticism
Petty criticisms
Petty critique
Petty crook
Petty despot
petty detail